Finding the Fourth Proportional to 11,456.25, 15,809.59 and 6,980.00

Step by Step Solution

1. Step 1: Write the proportion equation
   11,456.25 : 15,809.59 = 6,980.00 : x
2. Step 2: Convert to fraction form
   11,456.25/15,809.59 = 6,980.00/x
3. Step 3: Cross multiply
   11,456.25x = 15,809.59 × 6,980.00
4. Step 4: Simplify right side
   11,456.25x = 110,350,859.15
5. Step 5: Solve for x
   x = 110,350,859.15/11,456.25
6. Step 6: Final answer
   x = 9,632.38